Technologies

Mars snow is dusty, and might even melt into liquid water

Dusty, dark Mars ice could suck up solar energy and maybe even get a little melty.

This story is part of Welcome to Mars, our series exploring the red planet.

Back in 2008, NASA made a big announcement that its Phoenix lander had confirmed water ice near the surface of Mars. A team of researchers has taken a new look at what Phoenix found, combined it with data from NASA’s Mars Reconnaissance Orbiter, and used computer simulations to better understand the dustiness of the ice and what that can tell us about Mars’ climate history.

Not surprisingly, Mars snow has dust mixed into it. «The dustier the ice is, the darker and thus warmer the ice gets, which can affect both its stability and evolution through time,» Arizona State University said in a statement last week. «Under certain conditions, this might also mean that the ice could melt on Mars.»

The team’s paper on the Martian ice has been accepted for publication in the Journal of Geophysical Research: Planets.

«There is a chance that this dusty and dark ice might melt a few centimeters down,» said planetary scientist Aditya Khuller, lead author of the paper. «And any subsurface liquid water produced from melting will be protected from evaporating in Mars’ wispy atmosphere by the overlying blanket of ice.»

The research points to the ice investigated by Phoenix coming from dusty snowfall sometime over the last million years. It will require further work to determine if the ice might actually melt into liquid water, but it’s an intriguing idea.

Understanding water on Mars is key to understanding the chances the red planet might have once hosted microbial life. Current-day Mars is dry, dusty and very cold, which makes it pretty inhospitable, though a study earlier this year suggested Earth microbes might be able to survive on Mars temporarily.

Ice on Mars could also be important for future human visitors who will need water resources. In 2019, NASA released a «treasure map» of water ice that could potentially be reached by astronauts.

The history of water on Mars is complex and often mysterious. Some recent studies had suggested there might be hidden briny lakes at the planet’s south pole, but newer evidence argues they might actually be frozen clays. NASA’s Perseverance rover is currently checking out a former lakebed in the Jezero Crater in a search for signs of ancient microbial life.

The new study on Martian snow and its dustiness gives scientists one more piece to place into the larger puzzle of Mars water. Could there be pockets of puddles on Mars? Perhaps. You might want to pack a straw just in case.

Follow CNET’s 2021 Space Calendar to stay up to date with all the latest space news this year. You can even add it to your own Google Calendar.

Technologies

This 3-in-1 Charger Is a Must-Have for Travelers, and It Just Hit a Record-Low of $95

Snag it for $45 off and charge your iPhone, AirPods and Apple Watch at the same time.

If you’re a frequent traveler, then you know that outlets are a precious commodity in places like airports and coffee shops. So why waste one on a single device when you can charge up to three at once? Right now, you can grab this seriously sleek Ugreen Magflow three-in-one foldable charger for just $95 at Amazon. That’s a $45 discount and the all-time lowest price we’ve seen. Just don’t wait too long, as this deal could expire at any time.

At just 7.4 ounces, this compact charging station is designed to be taken on the go. But despite its size, it still supports 25-watt MagSafe charging for iPhones, as well as 5-watt wireless charging for AirPods and Apple Watches. The charging stand also tilts up to double as a stand, and it’s equipped with 16 magnets to keep your phone aligned and securely in place. Plus, it’s got built-in protections against overheating, overcharging, short-circuiting and more to prevent damage to your devices.

Why this deal matters

This folding Ugreen charger is great for juicing up your devices on the go, and it’s never been more affordable. Plus, Ugreen makes some of the best MagSafe chargers on the market right now, so don’t miss your chance to grab one at a record-low price.

Technologies

Today’s Wordle Hints, Answer and Help for Jan. 13, #1669

Here are hints and the answer for today’s Wordle for Jan. 13, No. 1,669.

Looking for the most recent Wordle answer? Click here for today’s Wordle hints, as well as our daily answers and hints for The New York Times Mini Crossword, Connections, Connections: Sports Edition and Strands puzzles.

Today’s Wordle puzzle is a little tricky, and it might make you hungry. If you need a new starter word, check out our list of which letters show up the most in English words. If you need hints and the answer, read on.

Today’s Wordle hints

Before we show you today’s Wordle answer, we’ll give you some hints. If you don’t want a spoiler, look away now.

Wordle hint No. 1: Repeats

Today’s Wordle answer has no repeated letters.

Wordle hint No. 2: Vowels

Today’s Wordle answer has two vowels.

Wordle hint No. 3: First letter

Today’s Wordle answer begins with G.

Wordle hint No. 4: Last letter

Today’s Wordle answer ends with O.

Wordle hint No. 5: Meaning

Today’s Wordle answer can refer to a spicy Cajun stew popular in New Orleans.

TODAY’S WORDLE ANSWER

Today’s Wordle answer is GUMBO.

Yesterday’s Wordle answer

Yesterday’s Wordle answer, Jan. 12, No. 1,668 was TRIAL.

Recent Wordle answers

Jan. 8, No. 1,664: BLAST

Jan. 9, No. 1,665: EIGHT

Jan. 10, No. 1,666: MANIC

Jan. 11, No. 1,667: QUARK

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

What’s the best Wordle starting word?

Don’t be afraid to use our tip sheet ranking all the letters in the alphabet by frequency of uses. In short, you want starter words that lean heavy on E, A and R, and don’t contain Z, J and Q.

Some solid starter words to try:

ADIEU

TRAIN

STARE

NOISE

Technologies

Today’s NYT Strands Hints, Answers and Help for Jan. 13 #681

Here are hints and answers for the NYT Strands puzzle for Jan. 13, No. 681.

Looking for the most recent Strands answer? Click here for our daily Strands hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections and Connections: Sports Edition puzzles.

It took me a while to figure out the theme for today’s NYT Strands puzzle, but once I did, I thought it was a fun one. Some of the answers are difficult to unscramble, so if you need hints and answers, read on.

I go into depth about the rules for Strands in this story.

If you’re looking for today’s Wordle, Connections and Mini Crossword answers, you can visit CNET’s NYT puzzle hints page.

Read more: NYT Connections Turns 1: These Are the 5 Toughest Puzzles So Far

Hint for today’s Strands puzzle

Today’s Strands theme is: You need to chill

If that doesn’t help you, here’s a clue: Brrrr!

Clue words to unlock in-game hints

Your goal is to find hidden words that fit the puzzle’s theme. If you’re stuck, find any words you can. Every time you find three words of four letters or more, Strands will reveal one of the theme words. These are the words I used to get those hints but any words of four or more letters that you find will work:

GONE, ABLE, TABLE, FOOD, TEEN, LEAF, GOOF, GOOD, SAFE

Answers for today’s Strands puzzle

These are the answers that tie into the theme. The goal of the puzzle is to find them all, including the spangram, a theme word that reaches from one side of the puzzle to the other. When you have all of them (I originally thought there were always eight but learned that the number can vary), every letter on the board will be used. Here are the nonspangram answers: